The optimal processing order of sensors with different qualities in multi-sensor system is investigated in this paper.
A sequential implementation of the integrated probability data association(IPDA) algorithm under random set framework is
derived based on the architectures for processing multi-sensor information. From analyzing the mean function of target
existence probability in this sequential IPDA filter, conclusions are drawn that the posterior probability of target existence is
only dependent on the first sensor in a sensor combination and is increased as its detection probability becomes higher. The
deduced conclusions are demonstrated by two simulation results.